ball sealing
短語詞組
- ball face sealing structure 球面密封結(jié)構(gòu)
- ball face sealing 球面密封
- ball head sealing 球頭密封
- ball valve sealing structures 球閥密封結(jié)構(gòu)
- Ball sealing support 球體密封支架
- gate valve for ball sealing 球面閘閥
- vacuum line sealing ball 真空管密封球
- metal hard sealing ball valve 金屬硬密封球閥 返回 ball sealing